85192491 has 24 divisors (see below), whose sum is σ = 122517360. Its totient is φ = 52467712.

The previous prime is 85192477. The next prime is 85192493. The reversal of 85192491 is 19429158.

It is not a de Polignac number, because 85192491 - 2⁶ = 85192427 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (85192493) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 621775 + ... + 621911.

It is an arithmetic number, because the mean of its divisors is an integer number (5104890).

Almost surely, 2^85192491 is an apocalyptic number.

85192491 is a deficient number, since it is larger than the sum of its proper divisors (37324869).

85192491 is a wasteful number, since it uses less digits than its factorization.

85192491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383 (or 246 counting only the distinct ones).

The product of its digits is 25920, while the sum is 39.

The square root of 85192491 is about 9229.9778439604. The cubic root of 85192491 is about 440.0146190046.

The spelling of 85192491 in words is "eighty-five million, one hundred ninety-two thousand, four hundred ninety-one".